Establishment of a Photon Data Section of the BNL National Nuclear Data Center: A preliminary proposal
It is proposed to establish a Photon Data Section (PDS) of the BNL National Nuclear Data Center (NNDC). This would be a total program encompassing both photon-atom and photon-nucleus interactions. By utilizing the existing NNDC data base management expertise and on-line access capabilities, the implementation of photon interaction data activities within the existing NNDC nuclear structure and nuclear-reaction activities can reestablish a viable photon interaction data program at minimum cost. By taking advantage of the on-line capabilities, the x-ray users' community will have access to a dynamic, state-of-the-art data base of interaction information. The proposed information base would include data that presently are scattered throughout the literature usually in tabulated form. It is expected that the data bases would include at least the most precise data available in photoelectric cross sections, atomic form factors and incoherent scattering functions, anomalous scattering factors, oscillator strengths and oscillator densities, fluorescence yields, Auger electron yields, etc. It could also include information not presently available in tabulations or in existing data bases such as EXAFS (extended x-ray absorption fine structure) reference spectra, chemical bonding induced shifts in the photoelectric absorption edge, matrix corrections, x-ray Raman, and x-ray resonant Raman cross sections. The data base will also include the best estimates of the accuracy of the interaction data as it exists in the data base. It is proposed that the PDS would support computer programs written for calculating scattering cross sections for given solid angles, sample geometries, and polarization of incident x-rays, for calculating Compton profiles, and for analyzing data as in EXAFS and x-ray fluorescence.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 7277311
- Report Number(s):
- BNL-47634-Draft; ON: DE92016950
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
74 ATOMIC AND MOLECULAR PHYSICS
PHOTON-ATOM COLLISIONS
PHOTONUCLEAR REACTIONS
CROSS SECTIONS
FORM FACTORS
NUCLEAR DATA COLLECTIONS
PHOTOELECTRIC EFFECT
RAYLEIGH SCATTERING
X-RAY DIFFRACTION
ATOM COLLISIONS
COHERENT SCATTERING
COLLISIONS
DIFFRACTION
NUCLEAR REACTIONS
PARTICLE PROPERTIES
PHOTOELECTROMAGNETIC EFFECTS
PHOTON COLLISIONS
SCATTERING
663410* - Photonuclear Reactions & Photon Scattering- (1992-)
664200 - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-)